indexing for multidimensional array

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C#

Hello all,

I am porting some C# code to C++ and there is a particular bit that has me a bit perplexed. The code is as follows:

byte [,,] data = new byte[d,h,w];
int i=0;

for (int z = 0; z < d; z++)
{
   for (int y = 0; y < h; y++)
   {
     for (int x = 0; x < w; x++)
    {
      data[z,y,x]=bytes[i++];
    }
  }
}

So, the variable bytes contains data that I have read from the file. Normally, I would calculate the linear index as follows:

index = (z*h+y)*w+x;

However, this seems to be not be the right thing in this case. I was wondering if someone knows if I am doing something obviously wrong...

Thanks,

Keith